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Senior Java Developer Jobs in Mississauga, ON (NOW HIRING)

NearSource

Senior JAVA Backend Developer

Toronto, ON · Remote

CA$80 - CA$90/hr

Senior Java Backend Developer Location: 100% Remote, Canada Experience: 7 to 10 Years Employment Type: T4 Contract Rate: CAD $80 to $90 per Hour Role Summary NearSource is seeking a Senior Java ...

Virtusa

Java Developer

Mississauga, ON · On-site

Seeking a Senior Application Developer with strong hands-on experience in developing server-side components in Java. Candidate must have experience in developing enterprise application using Java ...

Virtusa

Java Developer

Mississauga, ON · On-site

Seeking a Senior Application Developer with strong hands-on experience in developing server-side components in Java. Candidate must have experience in developing enterprise application using Java ...

Virtusa

Java Developer

Mississauga, ON · On-site

Seeking a Senior Application Developer with strong hands-on experience in developing server-side components in Java. Candidate must have experience in developing enterprise application using Java ...

Td

Senior IT Java Developer

Toronto, ON · On-site +1

CA$105K - CA$129K/yr

Job Summary We are seeking a Senior Java Developer / Architect to design, build, and operate scalable, event-driven, cloud-native applications using Apache Kafka, Spring Boot, and Microsoft Azure.

CMiC

Java Developer

Toronto, ON · On-site

CA$90K - CA$110K/yr

The overall hiring salary range for this position from Intermediate to Senior level, is $90,000 to ... We do not use AI to screen, assess, or select applicants Job Overview The Java Developer is ...

CMiC

Java Developer

Toronto, ON · On-site

CA$90K - CA$110K/yr

The overall hiring salary range for this position from Intermediate to Senior level, is $90,000 to ... We do not use AI to screen, assess, or select applicants Job Overview The Java Developer is ...

Scotiabank

Java Developer - Java/React

Toronto, ON · On-site

Reporting to the Senior Manager Development, this Sr. Software Developer role is responsible for ... Must have technical working experience with Core Java (Version 8 or higher)/Java, JDK17+

Synechron

Sr. Core Java Developer

Toronto, ON · Hybrid

CA$120K - CA$140K/yr

Our challenge We are seeking a highly experienced and hands-on Java Developer with a strong background in Core Java, Spring Framework, and low-latency multi-threaded programming to join our dynamic ...

Td

Senior Java Engineer, TD Securities

Toronto, ON · On-site

CA$126K - CA$164K/yr

... performing Java and Data engineer to help us design and implement next-generation calculations ... senior, executive stakeholders. Desired Skillsets: * Java/JEE * Spark/Scala * Big Data/Hadoop/Hive

Behavox

Senior Software Engineer (JAVA)

Toronto, ON · On-site

About the Role The Software Engineer (Java) operates at a senior engineer level, driving technical ... product, DevOps, and ML teams. Communicate technical decisions clearly to non-technical ...

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Senior Java Developer information

What is the difference between Senior Java Developer vs Java Software Engineer?

AspectSenior Java DeveloperJava Software Engineer
Required CredentialsBachelor's in CS or related, Java certifications often preferredBachelor's in CS or related, Java certifications beneficial
Work EnvironmentTeam lead roles, project management, mentoringDevelopment-focused, coding, testing, and implementation
Employer & Industry UsageTech companies, finance, e-commerceSoftware firms, startups, enterprise IT
Common Search & ComparisonOften compared for experience level and responsibilitiesSimilar roles with slight variations in scope

The main difference between a Senior Java Developer and a Java Software Engineer lies in their responsibilities and experience. Senior Java Developers typically take on leadership, mentoring, and project management roles, while Java Software Engineers focus more on coding, development, and technical implementation. Both roles require strong Java skills and relevant credentials, but the Senior Java Developer usually has more experience and a broader scope of responsibilities.

Is Java outdated in 2026?

Java remains a widely used programming language for senior Java developers in 2026, with ongoing updates and a large ecosystem supporting enterprise applications, Android development, and cloud services. Its stability, performance, and extensive libraries ensure its continued relevance in the software industry.

What are some common challenges Senior Java Developers face when working on large-scale enterprise projects?

Senior Java Developers often encounter challenges such as maintaining code quality across large codebases, managing dependencies between modules, and ensuring optimal application performance. Collaborating with cross-functional teams—including QA, DevOps, and product management—requires clear communication and effective problem-solving. Additionally, staying updated with the latest Java frameworks and best practices is essential for delivering scalable and maintainable solutions in complex enterprise environments.

How much do senior Java developers make?

Senior Java developers typically earn between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess strong skills in frameworks like Spring and Hibernate and may hold certifications such as Oracle Certified Professional Java SE.

What are the key skills and qualifications needed to thrive as a Senior Java Developer, and why are they important?

To thrive as a Senior Java Developer, you need advanced proficiency in Java programming, experience with software design patterns, and a strong grasp of backend development, often supported by a degree in computer science or related field. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git, as well as knowledge of cloud platforms, is typically required. Excellent problem-solving, leadership, and communication skills help you guide teams and collaborate effectively. These competencies are crucial for delivering robust, scalable software solutions and driving technical success within development teams.

What are Senior Java Developers?

Senior Java Developers are experienced software engineers who specialize in using the Java programming language to design, develop, and maintain complex applications. They typically lead development teams, oversee project architecture, and ensure code quality through best practices. In addition to strong coding skills, they often mentor junior developers and collaborate with stakeholders to deliver robust software solutions. Their expertise is crucial in building scalable, high-performance applications across various industries.

Which pays more, C++ or Java?

For a Senior Java Developer, salary differences between C++ and Java roles depend on industry, location, and experience. Generally, C++ developers may earn higher salaries in fields like finance or game development due to specialized skills, while Java developers are often in demand for enterprise applications. Both skills are valuable, and compensation varies based on the specific job market and required expertise.

Is AI replacing Java developers?

AI is automating certain coding tasks and improving software development processes, but it does not replace the need for senior Java developers. Java developers are essential for designing, maintaining, and optimizing complex applications, and their expertise remains valuable despite advancements in AI tools. Skills in problem-solving, system architecture, and understanding AI integration are increasingly important for Java professionals.
What are the most commonly searched types of Java Developer jobs in Mississauga, ON? The most popular types of Java Developer jobs in Mississauga, ON are:
What are popular job titles related to Senior Java Developer jobs in Mississauga, ON? For Senior Java Developer jobs in Mississauga, ON, the most frequently searched job titles are:
What job categories do people searching Senior Java Developer jobs in Mississauga, ON look for? The top searched job categories for Senior Java Developer jobs in Mississauga, ON are:
What cities near Mississauga, ON are hiring for Senior Java Developer jobs? Cities near Mississauga, ON with the most Senior Java Developer job openings:
Senior Java Developer jobs near you
Infographic showing various Senior Java Developer job openings in Mississauga, ON as of June 2026, with employment types broken down into 1% As Needed, 88% Full Time, 9% Part Time, 1% Temporary, and 1% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution.
Senior JAVA Backend Developer

Senior JAVA Backend Developer

NearSource

Toronto, ON • Remote

CA$80 - CA$90/hr

Full-time

Posted 6 days ago

Job description

Job Title: Senior Java Backend Developer
Location: 100% Remote, Canada
Experience: 7 to 10 Years
Employment Type: T4 Contract
Rate: CAD $80 to $90 per Hour

Role Summary
NearSource is seeking a Senior Java Backend Developer to contribute to a large-scale cloud-native platform for a Fortune 500 product company. This role requires strong expertise in backend engineering, event-driven architectures, distributed systems, and real-time data streaming. The successful candidate will be expected to quickly onboard and deliver value within the first weeks of engagement while collaborating with global engineering teams.

Key Responsibilities

  • Design, develop, and maintain scalable backend services using Java or Go.
  • Architect and implement event-driven systems leveraging Apache Kafka and AWS streaming technologies.
  • Build and optimize high-throughput data processing pipelines and asynchronous messaging workflows.
  • Develop reliable distributed systems with strong focus on resiliency, scalability, and operational excellence.
  • Implement and maintain cloud-native solutions on AWS services including DynamoDB, MSK/Kinesis, ECS/EKS, IAM, and S3.
  • Design partitioning strategies, retention policies, access controls, and consumer architectures for Kafka-based platforms.
  • Drive implementation of data streaming solutions supporting CDC patterns and event processing requirements.
  • Apply distributed systems best practices including idempotency, retry mechanisms, eventual consistency, and fault tolerance.
  • Collaborate with cross-functional engineering teams to deliver production-ready software solutions.
  • Troubleshoot, optimize, and improve platform performance, scalability, and reliability.
  • Contribute effectively within an existing project environment and achieve rapid productivity during onboarding.

Must-Have Skills

  • 7 to 10 years of professional software engineering experience.
  • Strong backend development experience using Java with Spring Boot or Go with modern service frameworks.
  • Hands-on production experience with Apache Kafka, including:
    • Producer and consumer APIs
    • Partition design
    • Retention management
    • ACL configuration
    • Kafka Admin Client
  • Hands-on production experience with AWS services, including:
    • DynamoDB
    • MSK or Kinesis
    • ECS or EKS
    • IAM
    • S3
  • Strong experience building event-driven architectures and streaming platforms.
  • Experience with Change Data Capture (CDC) patterns and asynchronous message processing.
  • Strong understanding of delivery guarantees, including exactly-once and at-least-once processing semantics.
  • Solid knowledge of distributed systems concepts including idempotency, retries with backoff, and eventual consistency.
  • Proven ability to join active projects and contribute effectively within the first one to two weeks.

Nice-to-Have Skills

  • Experience with Apache Flink, Flink SQL, or Kafka Streams.
  • Experience building stream consumers using AWS Kinesis Client Library (KCL).
  • Experience implementing Outbox patterns, Debezium, or similar CDC frameworks.
  • Experience with DynamoDB single-table design.
  • Familiarity with GitOps deployment methodologies using ArgoCD or Flux.
  • Familiarity with Apache Iceberg, Apache Paimon, or other open table formats.

Apply now, or share your resume with salary expectations at careers@nearsource.ca.

Thank you for considering a career with us! Once you submit your application, our Talent Acquisition team will review your resume thoroughly. If there's a strong match, we'll reach out to discuss your experience, role details, benefits, compensation, and next steps. While we strive for transparency, we may not be able to respond to every applicant due to high volume, but we genuinely appreciate your time and interest.

About NearSource

NearSource Technologies is a trusted partner for future-ready software consulting, enabling Fortune 500 enterprises to accelerate digital transformation. Our global engineering teams build and deploy impactful technology for some of the world's most admired brands, working directly on long-term client initiatives.

Equal Opportunity Employer

NearSource is an equal opportunity employer committed to fostering an inclusive and respectful environment. We celebrate diversity and do not discriminate based on race, gender, religion, sexual orientation, age, disability, or background. Innovation thrives when everyone feels empowered to contribute.